Abrading-cylinder.



`"When the E'ELERICK 'LAV OLMSTED. OF BROOKLINE, AND JAMES Vv?. EASTON, OF ARLINGTON,

VIASSCHUSETTS; SID EASTON ASSIGNOR T0 SAID OLMSTED.

ABRADNG-CYLINDER..

Application filed March l. 1911.

doni of .lrlinsfhinyvoiinlj oi' Middlesex. #wie oi' .".lnzfsneh Je inveuled zin operativ? n pion upon the exterior nl' i n roinlnblf cylindriculy carrier. exposed worden oi' i'lieibi':i ling sirio is `worn :i fresh porti-wn is pulled from iin supply in reserve sind the worn poriion is lorn oil'.

The variousnorol features oi ille inver.- um -.\'i l he Vlnllv lesrribed in ihe'isuhioiued slm-ilml ion und 'iuartieule noinedioit in alle llmving: rlninzs.

' isusiale elevuriouoli' Currier, v-:ih the rolled sirio of abruding ninteriul in pluee und having;f its free end :hurried around und clamped upon theperioliery of the Currier, l'he lfder being from" iis open end; Fie'. 2 a, view u ly in section on the line 4e-4, looking' 'toward the left; Fie 3 ik), is an enseeiioua.. detail. through une cylinl he line will of he Currier, reken o ev lha nbradius medium n strong: sind Q6 is hole'in li'e hloeh l tijzlil. by checkin-ii 2i', che .lrorizmiullv hrough u sui'lfin die Channel-gilde T and heving' rotatably inouned anon it 'the internal hub 28 or' n hollenr or ehanibered earrier 4*m'rior is used in u Speeicntion of Letters Patent,

Serial No. 611,682.

comprisingn circular inner end 29 und n cylindrical mill 30. Suid Currier is conwnimnly :1 inelul Casting, the outer end of iishnh boing' conuterbored to receive the hrend I3! of ih'e stud 2@ whereby the Currier is retained upon the lutter. A portion or The periphery or' the car 'ier is provided with .voim-leeih 32 which mesh with und rotule n geur secured to the pencil-holder when the pencil slmrpeninev inu- Chiue. rotation bein;y effected by means of s suitable handle 33, Fig. l, carried on a radial eur 34.- oxtended from the wall 30 at the open end of the Currier;

transverse, sloted seni 85 is made in the cylindrical Wall 30 of the carrier, extending; from he open end thereof lo :i lon- ;efitndinul slot 36, see Fig. 2, adjuoen the series of gen1* teeth 89. rhe Wall 30 is thickened at one side of the sent, as at S7, Fig. 3. und the beveled face 3S of ,the thickened purtornis one side of the sent, n roekshuift 39 being' sustained in transverse hole in the part 37 parallel to the axis of rotation of the carrier. Attached to the ends of the rock-shaft are inwardly extended, Lshuped arms 40, to which are pivotnlly Connected ne il rigid legs 4&2 secured to or forminga pari of :i at :ind rather .thin clamp 43 which is adapted to be drawn into The. slol'od sent 35 or moved outward therefrom, when the rock-shaft is turned in one or the other direction. One of the arms Al() und 'heveonneeted clump leg 42 swing in (the longitudinal slot 36 in the carrier Wall, while the other arm and its connected le;Y swing free :it the ouer or open end of the Carrier. as will be apparent from Fig'. 2.

A sfrip of abrucling material, sueh as Hint or garnet paper, or similar abra-sive medium, or uuy'polishing medium is used in this invention, ihe strip being of' such width that it will pass easily beween the eluinp legs 4:2 sind of suehlen'gth 'that after beine' passed around the periphery of the Carrier i eonsiderzible surplus remains. This abrading strip is preferably Wound in roll. iorin, es at 44, upon a suitable spool 45 :ide ied in be easily pushed onto, the end of "ehe carrier hub 28, with the roll inside the carrier, as shown. The free end ol" the ship is passed through the slotted seat- 35, between he clamp legs, and over the beveled ieee 38, and then it is carried around the periphery of the carrier, as et 4G, the free liti dii

end. 4:7 being passed under the clamp i3 and overlapped upon the portion lying on the face 38, see Fig. 3. After the part of the abradingr strip en'xbracing the eriphcry ot the carrier is pulled taut the clamp 43 is drawn into the seat 35, pinchingr the interposed abrading strip between the clamp and the seat proper which latterI is slightly flared and shallow at its outer end. The ahrading strip is thus clamped securely in its operative position upon the periphery of the carrier, as will be clearly understood, and if the end Tis too long it is torn oit, using the adjacent side of the clamp as a straight-edge. A Y

The arm at the open end of the carrier has an extension 48 provided at its free end with an enlargement 49 havingr a segmental slot l50 through which is passed -the thread ed shank of a locking nut 5l, the shank being' screwed into a hole 52 in the end of the hub 28, liig. 2.

As uiil be apparent from Fig. 1 the farther to the left the extension i8 is swung the tighter Will the clamp 43 be drawn in- Ward to clamp the abrading strip in the seat provided therefor, and the clamp is locked in its operative position by setting up the nut 5l, A positive, unyielding yet adjustable locking device is thus provided for the clamp. its Jthe slotted end 49 of the exten sion 4S is clamped Yagainst the outer end of the hub Q8 the roll fir/t ot abrading material is held in place Within the carrier, as shown 'in Figs. l and 2. the extension being swung upward to the right and the locking nut 5l being removed from the hub when a fresh roll is to be placed in the carrier. the exposed portion ot the abrading strip has been Worn down to such an extent: that it will no longer perform its proper function the clama 43 is released, the tree or exposed end d of the strip is grasped, and by pulling the same longitudinally the 1worn part ot the strip is drawn' oifand a fresh part' from the roll is pulled outset' the carriert'a'nd around its periphery. After the Aclamp has been locked upon the seat the long end ot' the used strip is torn od across the edge ot' the clamp and the machine is ready for use. @bviously the outer face of the clamp makes a break in the abrading surface, but it is in the arc of the latter and narrow, and no objectionable effects result.

Various changes or modifications in details of construction and arrangement may be made by those skilled in the art without departing trom the spirit and scope of the present invention as set forth in the claims hereunto annexed.

llavinar fully described our invention, what We claim as new and desire to secure by Letters Patent is:

l. ln a devige ot the class described, the combination with a hollow, rotatable carrier When nemesi the carrier and passing' through the scat y into the interior of the carrier to torni a roscrvc supply, and a manually governed clamp to hold upon the seat the ends ot' the, v

exposed portion of such ahradinp,r member.

Q. In a device ot' the class describedsthe combination with a hollow, rotatable carrier having a cylindrical wall adapted to oper( tively sustain an encirclilngr portion of an elongated abradinpr strip, said wall having a transverse, slotted scat for the passage into the carrier of the surplus portion of the. abrading strip, a clamp pivotally connected at its ends with said wall and adapted t0 clamp upon the seat the adjacent ends ot' Ithe exposed part of' the abrading strip, and adjustable, positively actingmeans to lock the clamp in operative position.

3. ln a .device of the class described,` a hollow, rotatable carrier having a cylindrical Wall adapted to sustain an encircling portion of an elongated abradingr strip, said wall having a transverse, slotted seat for the passage into the carrier of the surplus portion of the abradinp; strip. and adjustable means to clamp upon the seat the adjacent ends ofthe exposed portion of the strip.

4-7. ln a device ofthe class described, in combination, a hollow,.rotatable cylindrical carrier having a transversely slotted periphery adapted to sustain a surrounding strip of abrading material and to hold Within it a continuous reserve portion of the strip passed through the slot, and means to posi tively clamp the overlapped portions of the strip against the Walls of the slot.

5. ln a device of the class described, in combination, a cylindrical, rotatable carrier open at one end and having an interior hub, the periphery ot' the carrier havingr a trans j verse slotted seat therein, an external clamp/` adapted to .enter said seat and Ytulcrtuned on the carrier, and means to lock the clamp in the seat upon portions of a strip of abradine,r material embracing the periphery of the carriez', the surplus length of the strip passing through the seat into the interior of the carrier and being supported upon the hub.

6. ln a device of the class described,v in

clamp, and means to lock said member when the clamp 'is in operative posit-ion.

T. In a device otl the class desrribed, in combination. a rotatable, cylindrical carrier open at one endand having a transverse, slotted Seat in its periphery, a clamp to enter said seat, arms connected with the clamp and pivotally mounted in the circular wall of the carrier adjacent the seat, and locking` meansl connected with one of the arms, to hold the clamp positivel)r in the seat.

S. ln a device 0i the class described, the combination, with a hollow, rotatablt` vai'- ricr ha ving a cylindrical wall adapted lo operatively sustain an encircling portion of an elongated abrading strip` said wall having a transverse, slotted seat for the passage into the carrier ot' the surplus portion of the abi-ailing` strip,-a clamp, arms pivotally connet-.ted therewith and nlerumed in the cylindrical wall of thecarrier adjacent the seat, an extension on one of said arms, and means to lock said extension from movement when the clamp has been moved to clamping position in the seat.

9. In a device of the class described, in combination, a cylindrical, rotatable carrier open at one end and having' an interior hub,

the periphery of the carrier having a transverse slotted seat therein, an external clamp adapted to entersaid seat and fulcrumed on the carrier, a locking' extension at the open end of the carrier operatively connected with and to swing' said clamp into and out of the seat, the free end of the extension having a segmental-slot therein,'and a lock ing` nut having its shank passed through the slot and screwed into the outer end of the varrier hub, to lock said extension and the clamp with the latter operatively positioned in the peripheral scat of said carrier.

10. An abrading,r cylinder comprising a rotatable clXflindrieal carrier having 'a transverse slotted seat in its periphery, a clamp to enter said scat, a lever connected with the clamp and pivotally mounted on the carrier and means for securing the parts in adj usted position.

In testimony whereof, we have signed our names to thisspecification in the presence of two subscribing" witnesses.

FREDERICK LUV OLMSTED. JAMES W. EASTON. Witnesses RUTH LoUiisA DAYMOND, vManif F. MCDONALD. 

